Method for extracting oryzanol from rice bran oil soapstock

Abstract

The invention relates to a production method for extracting oryzanol from rice bran oil niger. The method can effectively solves the problem of the industrialized extraction of the oryzanol from the rice bran oil niger to meet the market requirements. The method adopts a technical proposal that the method comprises the following steps: heating up and dissolving the rice bran oil niger rich in the oryzanol, then diluting the rice bran oil niger through methanol, then saponifying the rice bran oil niger by complementing alkali, carrying out the alkaline bath filtration to obtain the filtrate of saponification liquor, filtrating the filtrate of the saponification liquor through acid pickling, carrying out water washing, acid dipping, purification, granulation and drying, so as to obtain the oryzanol. The method is scientific and advanced, and can effectively solve the technical problem of the industrialized extraction of the oryzanol from the rice bran oil niger. The oryzanol has the high quality; and the method has the high production efficiency and can effectively meet the market requirements on the oryzanol. The method is a great innovation for the oryzanol production and has great economic and social benefits.

Description

1. Technical field [0001] The invention relates to the field of chemical industry, in particular to a production method for extracting oryzanol from rice bran oil soapstock. 2. Background technology [0002] Rice bran oil soapstock is the product of rice bran processing rice bran oil, which is rich in oryzanol. Oryzanol is a mixture of cycloartanol ferulate and sterol ferulate, which is widely found in the grains of cereal plants and is a lipid accompaniment. The appearance of oryzanol is white to off-white crystalline powder, odorless, with specific fragrance, soluble in various oils under heating, insoluble in water. It can be used as an antioxidant for food additives, and is also the best raw material for medicine production. It can be used as a growth regulator, anti-aging and lowering blood fat. [0003] The content of oryzanol in the rice bran layer is generally 0.3-0.5%. The rice bran is separated from the bran, tempered, extruded and granulated, and after drying, ...

AI Technical Summary

Problems solved by technology

Although many vegetable oils (such as corn germ oil, wheat germ oil, linseed oil, rapeseed oil, etc.) contain oryzanol, but because of its low content, there is no value for industrial extraction, so far the natural oryzanol is from crude bran oil extract it

[0004] With the development of the oil industry and the continuation of deep processing of oil, various scientific research departments in my country have also begun to conduct scientific research on the comprehensive utilization of rice bran, and the domestic production of oryzanol has also been accelerated. However, due to various reasons, especially the problems in the preparation method, oryzanol The production scale is small and the output is low, which is far from meeting the demand of the market

Images